既有隔震建筑隔震支座无扰动更换技术研究  

Disturbance-free Replacement of Seismic Isolation Bearings in Existing Seismically Isolated Buildings

作　　者：李尚飞 崔少华 付素娟 褚少辉 LI Shangfei;CUI Shaohua;FU Sujuan;CHU Shaohui(Hebei Jianyan Architectural Design Co.,Ltd.,Shijiazhuang,Hebei 050021,China;The Engineering Technical Research Centre of Comprehensive Reconstruction Existing Buildings of Hebei Province,Shijiazhuang,Hebei 050021,China;Hebei Academy of Building Research Co.,Ltd.,Shijiazhuang,Hebei 050021,China)

机构地区：[1]河北建研建筑设计有限公司,河北石家庄050021 [2]河北省既有建筑综合改造技术创新中心,河北石家庄050021 [3]河北省建筑科学研究院有限公司,河北石家庄050021

出　　处：《施工技术(中英文)》2024年第24期134-137,149,共5页Construction Technology

基　　金：中央引导地方科技发展资金项目(科技创新基地项目)(236Z4506G);河北省建设科技计划项目(2021-2091)。

摘　　要：针对某体育场建筑隔震支座更换提出了一种既有隔震建筑隔震支座无扰动更换技术,该技术核心要点首先以PLC同步顶升系统为支撑,支撑点处结构无沉降变形,其次在隔震支座上、下端板间设置螺旋式紧固装置,利用预压装置完成隔震支座预压缩,压缩量控制在3~5mm,然后将劣化隔震支座拆除,更换新隔震支座,新支座安装就位固定,最后拆除支撑。在隔震支座更换过程中,通过对结构构件进行应力、应变实时监测发现上部结构无附加应力产生,整个更换过程对结构无扰动影响,更换效果良好。The paper proposes an undisturbed replacement technology for the existing isolation bearings of a stadium building.The key points of the technology are firstly supported by the PLC synchronous jacking system,and the structure at the support point has no settlement deformation.Secondly,a spiral fastening device is set between the upper and lower end plates of the isolation bearing,and the pre-compression of the isolation bearing is completed through pre-compression device.The compression is controlled at 3~5mm,and then the degraded isolation bearings are removed and replaced with new isolation bearings,and the new isolation bearings are installed and fixed,and finally the isolation bearings are removed.In the process of the replacement of the isolation bearings,it is found that no additional stress is generated in the superstructure through the monitoring of the stress and strain of the structural members.And there is no disturbance effect on the structure during whole replacement process.The replacement effect is better.

关 键 词：隔震建筑 隔震支座 预压缩 无扰动 更换 

分 类 号：TU352[建筑科学—结构工程]